1/*
2**
3** Copyright 2008, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9**     http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18// Proxy for media player implementations
19
20//#define LOG_NDEBUG 0
21#define LOG_TAG "MediaPlayerService"
22#include <utils/Log.h>
23
24#include <sys/types.h>
25#include <sys/stat.h>
26#include <sys/time.h>
27#include <dirent.h>
28#include <unistd.h>
29
30#include <string.h>
31
32#include <cutils/atomic.h>
33#include <cutils/properties.h> // for property_get
34
35#include <utils/misc.h>
36
37#include <binder/IPCThreadState.h>
38#include <binder/IServiceManager.h>
39#include <binder/MemoryHeapBase.h>
40#include <binder/MemoryBase.h>
41#include <gui/Surface.h>
42#include <utils/Errors.h>  // for status_t
43#include <utils/String8.h>
44#include <utils/SystemClock.h>
45#include <utils/Timers.h>
46#include <utils/Vector.h>
47
48#include <media/AudioPolicyHelper.h>
49#include <media/IMediaHTTPService.h>
50#include <media/IRemoteDisplay.h>
51#include <media/IRemoteDisplayClient.h>
52#include <media/MediaPlayerInterface.h>
53#include <media/mediarecorder.h>
54#include <media/MediaMetadataRetrieverInterface.h>
55#include <media/Metadata.h>
56#include <media/AudioTrack.h>
57#include <media/MemoryLeakTrackUtil.h>
58#include <media/stagefright/MediaCodecList.h>
59#include <media/stagefright/MediaErrors.h>
60#include <media/stagefright/Utils.h>
61#include <media/stagefright/foundation/ADebug.h>
62#include <media/stagefright/foundation/ALooperRoster.h>
63#include <mediautils/BatteryNotifier.h>
64
65#include <memunreachable/memunreachable.h>
66#include <system/audio.h>
67
68#include <private/android_filesystem_config.h>
69
70#include "ActivityManager.h"
71#include "MediaRecorderClient.h"
72#include "MediaPlayerService.h"
73#include "MetadataRetrieverClient.h"
74#include "MediaPlayerFactory.h"
75
76#include "TestPlayerStub.h"
77#include "nuplayer/NuPlayerDriver.h"
78
79#include <OMX.h>
80
81#include "HDCP.h"
82#include "HTTPBase.h"
83#include "RemoteDisplay.h"
84
85namespace {
86using android::media::Metadata;
87using android::status_t;
88using android::OK;
89using android::BAD_VALUE;
90using android::NOT_ENOUGH_DATA;
91using android::Parcel;
92
93// Max number of entries in the filter.
94const int kMaxFilterSize = 64;  // I pulled that out of thin air.
95
96const float kMaxRequiredSpeed = 8.0f; // for PCM tracks allow up to 8x speedup.
97
98// FIXME: Move all the metadata related function in the Metadata.cpp
99
100
101// Unmarshall a filter from a Parcel.
102// Filter format in a parcel:
103//
104//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
105// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
106// |                       number of entries (n)                   |
107// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
108// |                       metadata type 1                         |
109// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
110// |                       metadata type 2                         |
111// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
112//  ....
113// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
114// |                       metadata type n                         |
115// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
116//
117// @param p Parcel that should start with a filter.
118// @param[out] filter On exit contains the list of metadata type to be
119//                    filtered.
120// @param[out] status On exit contains the status code to be returned.
121// @return true if the parcel starts with a valid filter.
122bool unmarshallFilter(const Parcel& p,
123                      Metadata::Filter *filter,
124                      status_t *status)
125{
126    int32_t val;
127    if (p.readInt32(&val) != OK)
128    {
129        ALOGE("Failed to read filter's length");
130        *status = NOT_ENOUGH_DATA;
131        return false;
132    }
133
134    if( val > kMaxFilterSize || val < 0)
135    {
136        ALOGE("Invalid filter len %d", val);
137        *status = BAD_VALUE;
138        return false;
139    }
140
141    const size_t num = val;
142
143    filter->clear();
144    filter->setCapacity(num);
145
146    size_t size = num * sizeof(Metadata::Type);
147
148
149    if (p.dataAvail() < size)
150    {
151        ALOGE("Filter too short expected %zu but got %zu", size, p.dataAvail());
152        *status = NOT_ENOUGH_DATA;
153        return false;
154    }
155
156    const Metadata::Type *data =
157            static_cast<const Metadata::Type*>(p.readInplace(size));
158
159    if (NULL == data)
160    {
161        ALOGE("Filter had no data");
162        *status = BAD_VALUE;
163        return false;
164    }
165
166    // TODO: The stl impl of vector would be more efficient here
167    // because it degenerates into a memcpy on pod types. Try to
168    // replace later or use stl::set.
169    for (size_t i = 0; i < num; ++i)
170    {
171        filter->add(*data);
172        ++data;
173    }
174    *status = OK;
175    return true;
176}
177
178// @param filter Of metadata type.
179// @param val To be searched.
180// @return true if a match was found.
181bool findMetadata(const Metadata::Filter& filter, const int32_t val)
182{
183    // Deal with empty and ANY right away
184    if (filter.isEmpty()) return false;
185    if (filter[0] == Metadata::kAny) return true;
186
187    return filter.indexOf(val) >= 0;
188}
189
190}  // anonymous namespace
191
192
193namespace {
194using android::Parcel;
195using android::String16;
196
197// marshalling tag indicating flattened utf16 tags
198// keep in sync with frameworks/base/media/java/android/media/AudioAttributes.java
199const int32_t kAudioAttributesMarshallTagFlattenTags = 1;
200
201// Audio attributes format in a parcel:
202//
203//  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
204// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
205// |                       usage                                   |
206// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
207// |                       content_type                            |
208// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
209// |                       source                                  |
210// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
211// |                       flags                                   |
212// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
213// |                       kAudioAttributesMarshallTagFlattenTags  | // ignore tags if not found
214// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
215// |                       flattened tags in UTF16                 |
216// |                         ...                                   |
217// +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
218//
219// @param p Parcel that contains audio attributes.
220// @param[out] attributes On exit points to an initialized audio_attributes_t structure
221// @param[out] status On exit contains the status code to be returned.
222void unmarshallAudioAttributes(const Parcel& parcel, audio_attributes_t *attributes)
223{
224    attributes->usage = (audio_usage_t) parcel.readInt32();
225    attributes->content_type = (audio_content_type_t) parcel.readInt32();
226    attributes->source = (audio_source_t) parcel.readInt32();
227    attributes->flags = (audio_flags_mask_t) parcel.readInt32();
228    const bool hasFlattenedTag = (parcel.readInt32() == kAudioAttributesMarshallTagFlattenTags);
229    if (hasFlattenedTag) {
230        // the tags are UTF16, convert to UTF8
231        String16 tags = parcel.readString16();
232        ssize_t realTagSize = utf16_to_utf8_length(tags.string(), tags.size());
233        if (realTagSize <= 0) {
234            strcpy(attributes->tags, "");
235        } else {
236            // copy the flattened string into the attributes as the destination for the conversion:
237            // copying array size -1, array for tags was calloc'd, no need to NULL-terminate it
238            size_t tagSize = realTagSize > AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 ?
239                    AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1 : realTagSize;
240            utf16_to_utf8(tags.string(), tagSize, attributes->tags);
241        }
242    } else {
243        ALOGE("unmarshallAudioAttributes() received unflattened tags, ignoring tag values");
244        strcpy(attributes->tags, "");
245    }
246}
247} // anonymous namespace
248
249
250namespace android {
251
252extern ALooperRoster gLooperRoster;
253
254
255static bool checkPermission(const char* permissionString) {
256    if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
257    bool ok = checkCallingPermission(String16(permissionString));
258    if (!ok) ALOGE("Request requires %s", permissionString);
259    return ok;
260}
261
262// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
263/* static */ int MediaPlayerService::AudioOutput::mMinBufferCount = 4;
264/* static */ bool MediaPlayerService::AudioOutput::mIsOnEmulator = false;
265
266void MediaPlayerService::instantiate() {
267    defaultServiceManager()->addService(
268            String16("media.player"), new MediaPlayerService());
269}
270
271MediaPlayerService::MediaPlayerService()
272{
273    ALOGV("MediaPlayerService created");
274    mNextConnId = 1;
275
276    mBatteryAudio.refCount = 0;
277    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
278        mBatteryAudio.deviceOn[i] = 0;
279        mBatteryAudio.lastTime[i] = 0;
280        mBatteryAudio.totalTime[i] = 0;
281    }
282    // speaker is on by default
283    mBatteryAudio.deviceOn[SPEAKER] = 1;
284
285    // reset battery stats
286    // if the mediaserver has crashed, battery stats could be left
287    // in bad state, reset the state upon service start.
288    BatteryNotifier::getInstance().noteResetVideo();
289
290    MediaPlayerFactory::registerBuiltinFactories();
291}
292
293MediaPlayerService::~MediaPlayerService()
294{
295    ALOGV("MediaPlayerService destroyed");
296}
297
298sp<IMediaRecorder> MediaPlayerService::createMediaRecorder(const String16 &opPackageName)
299{
300    pid_t pid = IPCThreadState::self()->getCallingPid();
301    sp<MediaRecorderClient> recorder = new MediaRecorderClient(this, pid, opPackageName);
302    wp<MediaRecorderClient> w = recorder;
303    Mutex::Autolock lock(mLock);
304    mMediaRecorderClients.add(w);
305    ALOGV("Create new media recorder client from pid %d", pid);
306    return recorder;
307}
308
309void MediaPlayerService::removeMediaRecorderClient(wp<MediaRecorderClient> client)
310{
311    Mutex::Autolock lock(mLock);
312    mMediaRecorderClients.remove(client);
313    ALOGV("Delete media recorder client");
314}
315
316sp<IMediaMetadataRetriever> MediaPlayerService::createMetadataRetriever()
317{
318    pid_t pid = IPCThreadState::self()->getCallingPid();
319    sp<MetadataRetrieverClient> retriever = new MetadataRetrieverClient(pid);
320    ALOGV("Create new media retriever from pid %d", pid);
321    return retriever;
322}
323
324sp<IMediaPlayer> MediaPlayerService::create(const sp<IMediaPlayerClient>& client,
325        audio_session_t audioSessionId)
326{
327    pid_t pid = IPCThreadState::self()->getCallingPid();
328    int32_t connId = android_atomic_inc(&mNextConnId);
329
330    sp<Client> c = new Client(
331            this, pid, connId, client, audioSessionId,
332            IPCThreadState::self()->getCallingUid());
333
334    ALOGV("Create new client(%d) from pid %d, uid %d, ", connId, pid,
335         IPCThreadState::self()->getCallingUid());
336
337    wp<Client> w = c;
338    {
339        Mutex::Autolock lock(mLock);
340        mClients.add(w);
341    }
342    return c;
343}
344
345sp<IMediaCodecList> MediaPlayerService::getCodecList() const {
346    return MediaCodecList::getLocalInstance();
347}
348
349sp<IOMX> MediaPlayerService::getOMX() {
350    ALOGI("MediaPlayerService::getOMX");
351    Mutex::Autolock autoLock(mLock);
352
353    if (mOMX.get() == NULL) {
354        mOMX = new OMX;
355    }
356
357    return mOMX;
358}
359
360sp<IHDCP> MediaPlayerService::makeHDCP(bool createEncryptionModule) {
361    return new HDCP(createEncryptionModule);
362}
363
364sp<IRemoteDisplay> MediaPlayerService::listenForRemoteDisplay(
365        const String16 &opPackageName,
366        const sp<IRemoteDisplayClient>& client, const String8& iface) {
367    if (!checkPermission("android.permission.CONTROL_WIFI_DISPLAY")) {
368        return NULL;
369    }
370
371    return new RemoteDisplay(opPackageName, client, iface.string());
372}
373
374status_t MediaPlayerService::AudioOutput::dump(int fd, const Vector<String16>& args) const
375{
376    const size_t SIZE = 256;
377    char buffer[SIZE];
378    String8 result;
379
380    result.append(" AudioOutput\n");
381    snprintf(buffer, 255, "  stream type(%d), left - right volume(%f, %f)\n",
382            mStreamType, mLeftVolume, mRightVolume);
383    result.append(buffer);
384    snprintf(buffer, 255, "  msec per frame(%f), latency (%d)\n",
385            mMsecsPerFrame, (mTrack != 0) ? mTrack->latency() : -1);
386    result.append(buffer);
387    snprintf(buffer, 255, "  aux effect id(%d), send level (%f)\n",
388            mAuxEffectId, mSendLevel);
389    result.append(buffer);
390
391    ::write(fd, result.string(), result.size());
392    if (mTrack != 0) {
393        mTrack->dump(fd, args);
394    }
395    return NO_ERROR;
396}
397
398status_t MediaPlayerService::Client::dump(int fd, const Vector<String16>& args)
399{
400    const size_t SIZE = 256;
401    char buffer[SIZE];
402    String8 result;
403    result.append(" Client\n");
404    snprintf(buffer, 255, "  pid(%d), connId(%d), status(%d), looping(%s)\n",
405            mPid, mConnId, mStatus, mLoop?"true": "false");
406    result.append(buffer);
407    write(fd, result.string(), result.size());
408    if (mPlayer != NULL) {
409        mPlayer->dump(fd, args);
410    }
411    if (mAudioOutput != 0) {
412        mAudioOutput->dump(fd, args);
413    }
414    write(fd, "\n", 1);
415    return NO_ERROR;
416}
417
418/**
419 * The only arguments this understands right now are -c, -von and -voff,
420 * which are parsed by ALooperRoster::dump()
421 */
422status_t MediaPlayerService::dump(int fd, const Vector<String16>& args)
423{
424    const size_t SIZE = 256;
425    char buffer[SIZE];
426    String8 result;
427    SortedVector< sp<Client> > clients; //to serialise the mutex unlock & client destruction.
428    SortedVector< sp<MediaRecorderClient> > mediaRecorderClients;
429
430    if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
431        snprintf(buffer, SIZE, "Permission Denial: "
432                "can't dump MediaPlayerService from pid=%d, uid=%d\n",
433                IPCThreadState::self()->getCallingPid(),
434                IPCThreadState::self()->getCallingUid());
435        result.append(buffer);
436    } else {
437        Mutex::Autolock lock(mLock);
438        for (int i = 0, n = mClients.size(); i < n; ++i) {
439            sp<Client> c = mClients[i].promote();
440            if (c != 0) c->dump(fd, args);
441            clients.add(c);
442        }
443        if (mMediaRecorderClients.size() == 0) {
444                result.append(" No media recorder client\n\n");
445        } else {
446            for (int i = 0, n = mMediaRecorderClients.size(); i < n; ++i) {
447                sp<MediaRecorderClient> c = mMediaRecorderClients[i].promote();
448                if (c != 0) {
449                    snprintf(buffer, 255, " MediaRecorderClient pid(%d)\n", c->mPid);
450                    result.append(buffer);
451                    write(fd, result.string(), result.size());
452                    result = "\n";
453                    c->dump(fd, args);
454                    mediaRecorderClients.add(c);
455                }
456            }
457        }
458
459        result.append(" Files opened and/or mapped:\n");
460        snprintf(buffer, SIZE, "/proc/%d/maps", getpid());
461        FILE *f = fopen(buffer, "r");
462        if (f) {
463            while (!feof(f)) {
464                fgets(buffer, SIZE, f);
465                if (strstr(buffer, " /storage/") ||
466                    strstr(buffer, " /system/sounds/") ||
467                    strstr(buffer, " /data/") ||
468                    strstr(buffer, " /system/media/")) {
469                    result.append("  ");
470                    result.append(buffer);
471                }
472            }
473            fclose(f);
474        } else {
475            result.append("couldn't open ");
476            result.append(buffer);
477            result.append("\n");
478        }
479
480        snprintf(buffer, SIZE, "/proc/%d/fd", getpid());
481        DIR *d = opendir(buffer);
482        if (d) {
483            struct dirent *ent;
484            while((ent = readdir(d)) != NULL) {
485                if (strcmp(ent->d_name,".") && strcmp(ent->d_name,"..")) {
486                    snprintf(buffer, SIZE, "/proc/%d/fd/%s", getpid(), ent->d_name);
487                    struct stat s;
488                    if (lstat(buffer, &s) == 0) {
489                        if ((s.st_mode & S_IFMT) == S_IFLNK) {
490                            char linkto[256];
491                            int len = readlink(buffer, linkto, sizeof(linkto));
492                            if(len > 0) {
493                                if(len > 255) {
494                                    linkto[252] = '.';
495                                    linkto[253] = '.';
496                                    linkto[254] = '.';
497                                    linkto[255] = 0;
498                                } else {
499                                    linkto[len] = 0;
500                                }
501                                if (strstr(linkto, "/storage/") == linkto ||
502                                    strstr(linkto, "/system/sounds/") == linkto ||
503                                    strstr(linkto, "/data/") == linkto ||
504                                    strstr(linkto, "/system/media/") == linkto) {
505                                    result.append("  ");
506                                    result.append(buffer);
507                                    result.append(" -> ");
508                                    result.append(linkto);
509                                    result.append("\n");
510                                }
511                            }
512                        } else {
513                            result.append("  unexpected type for ");
514                            result.append(buffer);
515                            result.append("\n");
516                        }
517                    }
518                }
519            }
520            closedir(d);
521        } else {
522            result.append("couldn't open ");
523            result.append(buffer);
524            result.append("\n");
525        }
526
527        gLooperRoster.dump(fd, args);
528
529        bool dumpMem = false;
530        bool unreachableMemory = false;
531        for (size_t i = 0; i < args.size(); i++) {
532            if (args[i] == String16("-m")) {
533                dumpMem = true;
534            } else if (args[i] == String16("--unreachable")) {
535                unreachableMemory = true;
536            }
537        }
538        if (dumpMem) {
539            result.append("\nDumping memory:\n");
540            std::string s = dumpMemoryAddresses(100 /* limit */);
541            result.append(s.c_str(), s.size());
542        }
543        if (unreachableMemory) {
544            result.append("\nDumping unreachable memory:\n");
545            // TODO - should limit be an argument parameter?
546            std::string s = GetUnreachableMemoryString(true /* contents */, 10000 /* limit */);
547            result.append(s.c_str(), s.size());
548        }
549    }
550    write(fd, result.string(), result.size());
551    return NO_ERROR;
552}
553
554void MediaPlayerService::removeClient(wp<Client> client)
555{
556    Mutex::Autolock lock(mLock);
557    mClients.remove(client);
558}
559
560MediaPlayerService::Client::Client(
561        const sp<MediaPlayerService>& service, pid_t pid,
562        int32_t connId, const sp<IMediaPlayerClient>& client,
563        audio_session_t audioSessionId, uid_t uid)
564{
565    ALOGV("Client(%d) constructor", connId);
566    mPid = pid;
567    mConnId = connId;
568    mService = service;
569    mClient = client;
570    mLoop = false;
571    mStatus = NO_INIT;
572    mAudioSessionId = audioSessionId;
573    mUID = uid;
574    mRetransmitEndpointValid = false;
575    mAudioAttributes = NULL;
576
577#if CALLBACK_ANTAGONIZER
578    ALOGD("create Antagonizer");
579    mAntagonizer = new Antagonizer(notify, this);
580#endif
581}
582
583MediaPlayerService::Client::~Client()
584{
585    ALOGV("Client(%d) destructor pid = %d", mConnId, mPid);
586    mAudioOutput.clear();
587    wp<Client> client(this);
588    disconnect();
589    mService->removeClient(client);
590    if (mAudioAttributes != NULL) {
591        free(mAudioAttributes);
592    }
593}
594
595void MediaPlayerService::Client::disconnect()
596{
597    ALOGV("disconnect(%d) from pid %d", mConnId, mPid);
598    // grab local reference and clear main reference to prevent future
599    // access to object
600    sp<MediaPlayerBase> p;
601    {
602        Mutex::Autolock l(mLock);
603        p = mPlayer;
604        mClient.clear();
605    }
606
607    mPlayer.clear();
608
609    // clear the notification to prevent callbacks to dead client
610    // and reset the player. We assume the player will serialize
611    // access to itself if necessary.
612    if (p != 0) {
613        p->setNotifyCallback(0, 0);
614#if CALLBACK_ANTAGONIZER
615        ALOGD("kill Antagonizer");
616        mAntagonizer->kill();
617#endif
618        p->reset();
619    }
620
621    disconnectNativeWindow();
622
623    IPCThreadState::self()->flushCommands();
624}
625
626sp<MediaPlayerBase> MediaPlayerService::Client::createPlayer(player_type playerType)
627{
628    // determine if we have the right player type
629    sp<MediaPlayerBase> p = mPlayer;
630    if ((p != NULL) && (p->playerType() != playerType)) {
631        ALOGV("delete player");
632        p.clear();
633    }
634    if (p == NULL) {
635        p = MediaPlayerFactory::createPlayer(playerType, this, notify, mPid);
636    }
637
638    if (p != NULL) {
639        p->setUID(mUID);
640    }
641
642    return p;
643}
644
645MediaPlayerService::Client::ServiceDeathNotifier::ServiceDeathNotifier(
646        const sp<IBinder>& service,
647        const sp<MediaPlayerBase>& listener,
648        int which) {
649    mService = service;
650    mListener = listener;
651    mWhich = which;
652}
653
654MediaPlayerService::Client::ServiceDeathNotifier::~ServiceDeathNotifier() {
655    mService->unlinkToDeath(this);
656}
657
658void MediaPlayerService::Client::ServiceDeathNotifier::binderDied(const wp<IBinder>& /*who*/) {
659    sp<MediaPlayerBase> listener = mListener.promote();
660    if (listener != NULL) {
661        listener->sendEvent(MEDIA_ERROR, MEDIA_ERROR_SERVER_DIED, mWhich);
662    } else {
663        ALOGW("listener for process %d death is gone", mWhich);
664    }
665}
666
667sp<MediaPlayerBase> MediaPlayerService::Client::setDataSource_pre(
668        player_type playerType)
669{
670    ALOGV("player type = %d", playerType);
671
672    // create the right type of player
673    sp<MediaPlayerBase> p = createPlayer(playerType);
674    if (p == NULL) {
675        return p;
676    }
677
678    sp<IServiceManager> sm = defaultServiceManager();
679    sp<IBinder> binder = sm->getService(String16("media.extractor"));
680    mExtractorDeathListener = new ServiceDeathNotifier(binder, p, MEDIAEXTRACTOR_PROCESS_DEATH);
681    binder->linkToDeath(mExtractorDeathListener);
682
683    binder = sm->getService(String16("media.codec"));
684    mCodecDeathListener = new ServiceDeathNotifier(binder, p, MEDIACODEC_PROCESS_DEATH);
685    binder->linkToDeath(mCodecDeathListener);
686
687    if (!p->hardwareOutput()) {
688        Mutex::Autolock l(mLock);
689        mAudioOutput = new AudioOutput(mAudioSessionId, IPCThreadState::self()->getCallingUid(),
690                mPid, mAudioAttributes);
691        static_cast<MediaPlayerInterface*>(p.get())->setAudioSink(mAudioOutput);
692    }
693
694    return p;
695}
696
697void MediaPlayerService::Client::setDataSource_post(
698        const sp<MediaPlayerBase>& p,
699        status_t status)
700{
701    ALOGV(" setDataSource");
702    mStatus = status;
703    if (mStatus != OK) {
704        ALOGE("  error: %d", mStatus);
705        return;
706    }
707
708    // Set the re-transmission endpoint if one was chosen.
709    if (mRetransmitEndpointValid) {
710        mStatus = p->setRetransmitEndpoint(&mRetransmitEndpoint);
711        if (mStatus != NO_ERROR) {
712            ALOGE("setRetransmitEndpoint error: %d", mStatus);
713        }
714    }
715
716    if (mStatus == OK) {
717        mPlayer = p;
718    }
719}
720
721status_t MediaPlayerService::Client::setDataSource(
722        const sp<IMediaHTTPService> &httpService,
723        const char *url,
724        const KeyedVector<String8, String8> *headers)
725{
726    ALOGV("setDataSource(%s)", url);
727    if (url == NULL)
728        return UNKNOWN_ERROR;
729
730    if ((strncmp(url, "http://", 7) == 0) ||
731        (strncmp(url, "https://", 8) == 0) ||
732        (strncmp(url, "rtsp://", 7) == 0)) {
733        if (!checkPermission("android.permission.INTERNET")) {
734            return PERMISSION_DENIED;
735        }
736    }
737
738    if (strncmp(url, "content://", 10) == 0) {
739        // get a filedescriptor for the content Uri and
740        // pass it to the setDataSource(fd) method
741
742        String16 url16(url);
743        int fd = android::openContentProviderFile(url16);
744        if (fd < 0)
745        {
746            ALOGE("Couldn't open fd for %s", url);
747            return UNKNOWN_ERROR;
748        }
749        setDataSource(fd, 0, 0x7fffffffffLL); // this sets mStatus
750        close(fd);
751        return mStatus;
752    } else {
753        player_type playerType = MediaPlayerFactory::getPlayerType(this, url);
754        sp<MediaPlayerBase> p = setDataSource_pre(playerType);
755        if (p == NULL) {
756            return NO_INIT;
757        }
758
759        setDataSource_post(p, p->setDataSource(httpService, url, headers));
760        return mStatus;
761    }
762}
763
764status_t MediaPlayerService::Client::setDataSource(int fd, int64_t offset, int64_t length)
765{
766    ALOGV("setDataSource fd=%d (%s), offset=%lld, length=%lld",
767            fd, nameForFd(fd).c_str(), (long long) offset, (long long) length);
768    struct stat sb;
769    int ret = fstat(fd, &sb);
770    if (ret != 0) {
771        ALOGE("fstat(%d) failed: %d, %s", fd, ret, strerror(errno));
772        return UNKNOWN_ERROR;
773    }
774
775    ALOGV("st_dev  = %llu", static_cast<unsigned long long>(sb.st_dev));
776    ALOGV("st_mode = %u", sb.st_mode);
777    ALOGV("st_uid  = %lu", static_cast<unsigned long>(sb.st_uid));
778    ALOGV("st_gid  = %lu", static_cast<unsigned long>(sb.st_gid));
779    ALOGV("st_size = %llu", static_cast<unsigned long long>(sb.st_size));
780
781    if (offset >= sb.st_size) {
782        ALOGE("offset error");
783        return UNKNOWN_ERROR;
784    }
785    if (offset + length > sb.st_size) {
786        length = sb.st_size - offset;
787        ALOGV("calculated length = %lld", (long long)length);
788    }
789
790    player_type playerType = MediaPlayerFactory::getPlayerType(this,
791                                                               fd,
792                                                               offset,
793                                                               length);
794    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
795    if (p == NULL) {
796        return NO_INIT;
797    }
798
799    // now set data source
800    setDataSource_post(p, p->setDataSource(fd, offset, length));
801    return mStatus;
802}
803
804status_t MediaPlayerService::Client::setDataSource(
805        const sp<IStreamSource> &source) {
806    // create the right type of player
807    player_type playerType = MediaPlayerFactory::getPlayerType(this, source);
808    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
809    if (p == NULL) {
810        return NO_INIT;
811    }
812
813    // now set data source
814    setDataSource_post(p, p->setDataSource(source));
815    return mStatus;
816}
817
818status_t MediaPlayerService::Client::setDataSource(
819        const sp<IDataSource> &source) {
820    sp<DataSource> dataSource = DataSource::CreateFromIDataSource(source);
821    player_type playerType = MediaPlayerFactory::getPlayerType(this, dataSource);
822    sp<MediaPlayerBase> p = setDataSource_pre(playerType);
823    if (p == NULL) {
824        return NO_INIT;
825    }
826    // now set data source
827    setDataSource_post(p, p->setDataSource(dataSource));
828    return mStatus;
829}
830
831void MediaPlayerService::Client::disconnectNativeWindow() {
832    if (mConnectedWindow != NULL) {
833        status_t err = native_window_api_disconnect(mConnectedWindow.get(),
834                NATIVE_WINDOW_API_MEDIA);
835
836        if (err != OK) {
837            ALOGW("native_window_api_disconnect returned an error: %s (%d)",
838                    strerror(-err), err);
839        }
840    }
841    mConnectedWindow.clear();
842}
843
844status_t MediaPlayerService::Client::setVideoSurfaceTexture(
845        const sp<IGraphicBufferProducer>& bufferProducer)
846{
847    ALOGV("[%d] setVideoSurfaceTexture(%p)", mConnId, bufferProducer.get());
848    sp<MediaPlayerBase> p = getPlayer();
849    if (p == 0) return UNKNOWN_ERROR;
850
851    sp<IBinder> binder(IInterface::asBinder(bufferProducer));
852    if (mConnectedWindowBinder == binder) {
853        return OK;
854    }
855
856    sp<ANativeWindow> anw;
857    if (bufferProducer != NULL) {
858        anw = new Surface(bufferProducer, true /* controlledByApp */);
859        status_t err = native_window_api_connect(anw.get(),
860                NATIVE_WINDOW_API_MEDIA);
861
862        if (err != OK) {
863            ALOGE("setVideoSurfaceTexture failed: %d", err);
864            // Note that we must do the reset before disconnecting from the ANW.
865            // Otherwise queue/dequeue calls could be made on the disconnected
866            // ANW, which may result in errors.
867            reset();
868
869            disconnectNativeWindow();
870
871            return err;
872        }
873    }
874
875    // Note that we must set the player's new GraphicBufferProducer before
876    // disconnecting the old one.  Otherwise queue/dequeue calls could be made
877    // on the disconnected ANW, which may result in errors.
878    status_t err = p->setVideoSurfaceTexture(bufferProducer);
879
880    disconnectNativeWindow();
881
882    mConnectedWindow = anw;
883
884    if (err == OK) {
885        mConnectedWindowBinder = binder;
886    } else {
887        disconnectNativeWindow();
888    }
889
890    return err;
891}
892
893status_t MediaPlayerService::Client::invoke(const Parcel& request,
894                                            Parcel *reply)
895{
896    sp<MediaPlayerBase> p = getPlayer();
897    if (p == NULL) return UNKNOWN_ERROR;
898    return p->invoke(request, reply);
899}
900
901// This call doesn't need to access the native player.
902status_t MediaPlayerService::Client::setMetadataFilter(const Parcel& filter)
903{
904    status_t status;
905    media::Metadata::Filter allow, drop;
906
907    if (unmarshallFilter(filter, &allow, &status) &&
908        unmarshallFilter(filter, &drop, &status)) {
909        Mutex::Autolock lock(mLock);
910
911        mMetadataAllow = allow;
912        mMetadataDrop = drop;
913    }
914    return status;
915}
916
917status_t MediaPlayerService::Client::getMetadata(
918        bool update_only, bool /*apply_filter*/, Parcel *reply)
919{
920    sp<MediaPlayerBase> player = getPlayer();
921    if (player == 0) return UNKNOWN_ERROR;
922
923    status_t status;
924    // Placeholder for the return code, updated by the caller.
925    reply->writeInt32(-1);
926
927    media::Metadata::Filter ids;
928
929    // We don't block notifications while we fetch the data. We clear
930    // mMetadataUpdated first so we don't lose notifications happening
931    // during the rest of this call.
932    {
933        Mutex::Autolock lock(mLock);
934        if (update_only) {
935            ids = mMetadataUpdated;
936        }
937        mMetadataUpdated.clear();
938    }
939
940    media::Metadata metadata(reply);
941
942    metadata.appendHeader();
943    status = player->getMetadata(ids, reply);
944
945    if (status != OK) {
946        metadata.resetParcel();
947        ALOGE("getMetadata failed %d", status);
948        return status;
949    }
950
951    // FIXME: Implement filtering on the result. Not critical since
952    // filtering takes place on the update notifications already. This
953    // would be when all the metadata are fetch and a filter is set.
954
955    // Everything is fine, update the metadata length.
956    metadata.updateLength();
957    return OK;
958}
959
960status_t MediaPlayerService::Client::prepareAsync()
961{
962    ALOGV("[%d] prepareAsync", mConnId);
963    sp<MediaPlayerBase> p = getPlayer();
964    if (p == 0) return UNKNOWN_ERROR;
965    status_t ret = p->prepareAsync();
966#if CALLBACK_ANTAGONIZER
967    ALOGD("start Antagonizer");
968    if (ret == NO_ERROR) mAntagonizer->start();
969#endif
970    return ret;
971}
972
973status_t MediaPlayerService::Client::start()
974{
975    ALOGV("[%d] start", mConnId);
976    sp<MediaPlayerBase> p = getPlayer();
977    if (p == 0) return UNKNOWN_ERROR;
978    p->setLooping(mLoop);
979    return p->start();
980}
981
982status_t MediaPlayerService::Client::stop()
983{
984    ALOGV("[%d] stop", mConnId);
985    sp<MediaPlayerBase> p = getPlayer();
986    if (p == 0) return UNKNOWN_ERROR;
987    return p->stop();
988}
989
990status_t MediaPlayerService::Client::pause()
991{
992    ALOGV("[%d] pause", mConnId);
993    sp<MediaPlayerBase> p = getPlayer();
994    if (p == 0) return UNKNOWN_ERROR;
995    return p->pause();
996}
997
998status_t MediaPlayerService::Client::isPlaying(bool* state)
999{
1000    *state = false;
1001    sp<MediaPlayerBase> p = getPlayer();
1002    if (p == 0) return UNKNOWN_ERROR;
1003    *state = p->isPlaying();
1004    ALOGV("[%d] isPlaying: %d", mConnId, *state);
1005    return NO_ERROR;
1006}
1007
1008status_t MediaPlayerService::Client::setPlaybackSettings(const AudioPlaybackRate& rate)
1009{
1010    ALOGV("[%d] setPlaybackSettings(%f, %f, %d, %d)",
1011            mConnId, rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
1012    sp<MediaPlayerBase> p = getPlayer();
1013    if (p == 0) return UNKNOWN_ERROR;
1014    return p->setPlaybackSettings(rate);
1015}
1016
1017status_t MediaPlayerService::Client::getPlaybackSettings(AudioPlaybackRate* rate /* nonnull */)
1018{
1019    sp<MediaPlayerBase> p = getPlayer();
1020    if (p == 0) return UNKNOWN_ERROR;
1021    status_t ret = p->getPlaybackSettings(rate);
1022    if (ret == NO_ERROR) {
1023        ALOGV("[%d] getPlaybackSettings(%f, %f, %d, %d)",
1024                mConnId, rate->mSpeed, rate->mPitch, rate->mFallbackMode, rate->mStretchMode);
1025    } else {
1026        ALOGV("[%d] getPlaybackSettings returned %d", mConnId, ret);
1027    }
1028    return ret;
1029}
1030
1031status_t MediaPlayerService::Client::setSyncSettings(
1032        const AVSyncSettings& sync, float videoFpsHint)
1033{
1034    ALOGV("[%d] setSyncSettings(%u, %u, %f, %f)",
1035            mConnId, sync.mSource, sync.mAudioAdjustMode, sync.mTolerance, videoFpsHint);
1036    sp<MediaPlayerBase> p = getPlayer();
1037    if (p == 0) return UNKNOWN_ERROR;
1038    return p->setSyncSettings(sync, videoFpsHint);
1039}
1040
1041status_t MediaPlayerService::Client::getSyncSettings(
1042        AVSyncSettings* sync /* nonnull */, float* videoFps /* nonnull */)
1043{
1044    sp<MediaPlayerBase> p = getPlayer();
1045    if (p == 0) return UNKNOWN_ERROR;
1046    status_t ret = p->getSyncSettings(sync, videoFps);
1047    if (ret == NO_ERROR) {
1048        ALOGV("[%d] getSyncSettings(%u, %u, %f, %f)",
1049                mConnId, sync->mSource, sync->mAudioAdjustMode, sync->mTolerance, *videoFps);
1050    } else {
1051        ALOGV("[%d] getSyncSettings returned %d", mConnId, ret);
1052    }
1053    return ret;
1054}
1055
1056status_t MediaPlayerService::Client::getCurrentPosition(int *msec)
1057{
1058    ALOGV("getCurrentPosition");
1059    sp<MediaPlayerBase> p = getPlayer();
1060    if (p == 0) return UNKNOWN_ERROR;
1061    status_t ret = p->getCurrentPosition(msec);
1062    if (ret == NO_ERROR) {
1063        ALOGV("[%d] getCurrentPosition = %d", mConnId, *msec);
1064    } else {
1065        ALOGE("getCurrentPosition returned %d", ret);
1066    }
1067    return ret;
1068}
1069
1070status_t MediaPlayerService::Client::getDuration(int *msec)
1071{
1072    ALOGV("getDuration");
1073    sp<MediaPlayerBase> p = getPlayer();
1074    if (p == 0) return UNKNOWN_ERROR;
1075    status_t ret = p->getDuration(msec);
1076    if (ret == NO_ERROR) {
1077        ALOGV("[%d] getDuration = %d", mConnId, *msec);
1078    } else {
1079        ALOGE("getDuration returned %d", ret);
1080    }
1081    return ret;
1082}
1083
1084status_t MediaPlayerService::Client::setNextPlayer(const sp<IMediaPlayer>& player) {
1085    ALOGV("setNextPlayer");
1086    Mutex::Autolock l(mLock);
1087    sp<Client> c = static_cast<Client*>(player.get());
1088    mNextClient = c;
1089
1090    if (c != NULL) {
1091        if (mAudioOutput != NULL) {
1092            mAudioOutput->setNextOutput(c->mAudioOutput);
1093        } else if ((mPlayer != NULL) && !mPlayer->hardwareOutput()) {
1094            ALOGE("no current audio output");
1095        }
1096
1097        if ((mPlayer != NULL) && (mNextClient->getPlayer() != NULL)) {
1098            mPlayer->setNextPlayer(mNextClient->getPlayer());
1099        }
1100    }
1101
1102    return OK;
1103}
1104
1105status_t MediaPlayerService::Client::seekTo(int msec)
1106{
1107    ALOGV("[%d] seekTo(%d)", mConnId, msec);
1108    sp<MediaPlayerBase> p = getPlayer();
1109    if (p == 0) return UNKNOWN_ERROR;
1110    return p->seekTo(msec);
1111}
1112
1113status_t MediaPlayerService::Client::reset()
1114{
1115    ALOGV("[%d] reset", mConnId);
1116    mRetransmitEndpointValid = false;
1117    sp<MediaPlayerBase> p = getPlayer();
1118    if (p == 0) return UNKNOWN_ERROR;
1119    return p->reset();
1120}
1121
1122status_t MediaPlayerService::Client::setAudioStreamType(audio_stream_type_t type)
1123{
1124    ALOGV("[%d] setAudioStreamType(%d)", mConnId, type);
1125    // TODO: for hardware output, call player instead
1126    Mutex::Autolock l(mLock);
1127    if (mAudioOutput != 0) mAudioOutput->setAudioStreamType(type);
1128    return NO_ERROR;
1129}
1130
1131status_t MediaPlayerService::Client::setAudioAttributes_l(const Parcel &parcel)
1132{
1133    if (mAudioAttributes != NULL) { free(mAudioAttributes); }
1134    mAudioAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1135    if (mAudioAttributes == NULL) {
1136        return NO_MEMORY;
1137    }
1138    unmarshallAudioAttributes(parcel, mAudioAttributes);
1139
1140    ALOGV("setAudioAttributes_l() usage=%d content=%d flags=0x%x tags=%s",
1141            mAudioAttributes->usage, mAudioAttributes->content_type, mAudioAttributes->flags,
1142            mAudioAttributes->tags);
1143
1144    if (mAudioOutput != 0) {
1145        mAudioOutput->setAudioAttributes(mAudioAttributes);
1146    }
1147    return NO_ERROR;
1148}
1149
1150status_t MediaPlayerService::Client::setLooping(int loop)
1151{
1152    ALOGV("[%d] setLooping(%d)", mConnId, loop);
1153    mLoop = loop;
1154    sp<MediaPlayerBase> p = getPlayer();
1155    if (p != 0) return p->setLooping(loop);
1156    return NO_ERROR;
1157}
1158
1159status_t MediaPlayerService::Client::setVolume(float leftVolume, float rightVolume)
1160{
1161    ALOGV("[%d] setVolume(%f, %f)", mConnId, leftVolume, rightVolume);
1162
1163    // for hardware output, call player instead
1164    sp<MediaPlayerBase> p = getPlayer();
1165    {
1166      Mutex::Autolock l(mLock);
1167      if (p != 0 && p->hardwareOutput()) {
1168          MediaPlayerHWInterface* hwp =
1169                  reinterpret_cast<MediaPlayerHWInterface*>(p.get());
1170          return hwp->setVolume(leftVolume, rightVolume);
1171      } else {
1172          if (mAudioOutput != 0) mAudioOutput->setVolume(leftVolume, rightVolume);
1173          return NO_ERROR;
1174      }
1175    }
1176
1177    return NO_ERROR;
1178}
1179
1180status_t MediaPlayerService::Client::setAuxEffectSendLevel(float level)
1181{
1182    ALOGV("[%d] setAuxEffectSendLevel(%f)", mConnId, level);
1183    Mutex::Autolock l(mLock);
1184    if (mAudioOutput != 0) return mAudioOutput->setAuxEffectSendLevel(level);
1185    return NO_ERROR;
1186}
1187
1188status_t MediaPlayerService::Client::attachAuxEffect(int effectId)
1189{
1190    ALOGV("[%d] attachAuxEffect(%d)", mConnId, effectId);
1191    Mutex::Autolock l(mLock);
1192    if (mAudioOutput != 0) return mAudioOutput->attachAuxEffect(effectId);
1193    return NO_ERROR;
1194}
1195
1196status_t MediaPlayerService::Client::setParameter(int key, const Parcel &request) {
1197    ALOGV("[%d] setParameter(%d)", mConnId, key);
1198    switch (key) {
1199    case KEY_PARAMETER_AUDIO_ATTRIBUTES:
1200    {
1201        Mutex::Autolock l(mLock);
1202        return setAudioAttributes_l(request);
1203    }
1204    default:
1205        sp<MediaPlayerBase> p = getPlayer();
1206        if (p == 0) { return UNKNOWN_ERROR; }
1207        return p->setParameter(key, request);
1208    }
1209}
1210
1211status_t MediaPlayerService::Client::getParameter(int key, Parcel *reply) {
1212    ALOGV("[%d] getParameter(%d)", mConnId, key);
1213    sp<MediaPlayerBase> p = getPlayer();
1214    if (p == 0) return UNKNOWN_ERROR;
1215    return p->getParameter(key, reply);
1216}
1217
1218status_t MediaPlayerService::Client::setRetransmitEndpoint(
1219        const struct sockaddr_in* endpoint) {
1220
1221    if (NULL != endpoint) {
1222        uint32_t a = ntohl(endpoint->sin_addr.s_addr);
1223        uint16_t p = ntohs(endpoint->sin_port);
1224        ALOGV("[%d] setRetransmitEndpoint(%u.%u.%u.%u:%hu)", mConnId,
1225                (a >> 24), (a >> 16) & 0xFF, (a >> 8) & 0xFF, (a & 0xFF), p);
1226    } else {
1227        ALOGV("[%d] setRetransmitEndpoint = <none>", mConnId);
1228    }
1229
1230    sp<MediaPlayerBase> p = getPlayer();
1231
1232    // Right now, the only valid time to set a retransmit endpoint is before
1233    // player selection has been made (since the presence or absence of a
1234    // retransmit endpoint is going to determine which player is selected during
1235    // setDataSource).
1236    if (p != 0) return INVALID_OPERATION;
1237
1238    if (NULL != endpoint) {
1239        mRetransmitEndpoint = *endpoint;
1240        mRetransmitEndpointValid = true;
1241    } else {
1242        mRetransmitEndpointValid = false;
1243    }
1244
1245    return NO_ERROR;
1246}
1247
1248status_t MediaPlayerService::Client::getRetransmitEndpoint(
1249        struct sockaddr_in* endpoint)
1250{
1251    if (NULL == endpoint)
1252        return BAD_VALUE;
1253
1254    sp<MediaPlayerBase> p = getPlayer();
1255
1256    if (p != NULL)
1257        return p->getRetransmitEndpoint(endpoint);
1258
1259    if (!mRetransmitEndpointValid)
1260        return NO_INIT;
1261
1262    *endpoint = mRetransmitEndpoint;
1263
1264    return NO_ERROR;
1265}
1266
1267void MediaPlayerService::Client::notify(
1268        void* cookie, int msg, int ext1, int ext2, const Parcel *obj)
1269{
1270    Client* client = static_cast<Client*>(cookie);
1271    if (client == NULL) {
1272        return;
1273    }
1274
1275    sp<IMediaPlayerClient> c;
1276    {
1277        Mutex::Autolock l(client->mLock);
1278        c = client->mClient;
1279        if (msg == MEDIA_PLAYBACK_COMPLETE && client->mNextClient != NULL) {
1280            if (client->mAudioOutput != NULL)
1281                client->mAudioOutput->switchToNextOutput();
1282            client->mNextClient->start();
1283            if (client->mNextClient->mClient != NULL) {
1284                client->mNextClient->mClient->notify(
1285                        MEDIA_INFO, MEDIA_INFO_STARTED_AS_NEXT, 0, obj);
1286            }
1287        }
1288    }
1289
1290    if (MEDIA_INFO == msg &&
1291        MEDIA_INFO_METADATA_UPDATE == ext1) {
1292        const media::Metadata::Type metadata_type = ext2;
1293
1294        if(client->shouldDropMetadata(metadata_type)) {
1295            return;
1296        }
1297
1298        // Update the list of metadata that have changed. getMetadata
1299        // also access mMetadataUpdated and clears it.
1300        client->addNewMetadataUpdate(metadata_type);
1301    }
1302
1303    if (c != NULL) {
1304        ALOGV("[%d] notify (%p, %d, %d, %d)", client->mConnId, cookie, msg, ext1, ext2);
1305        c->notify(msg, ext1, ext2, obj);
1306    }
1307}
1308
1309
1310bool MediaPlayerService::Client::shouldDropMetadata(media::Metadata::Type code) const
1311{
1312    Mutex::Autolock lock(mLock);
1313
1314    if (findMetadata(mMetadataDrop, code)) {
1315        return true;
1316    }
1317
1318    if (mMetadataAllow.isEmpty() || findMetadata(mMetadataAllow, code)) {
1319        return false;
1320    } else {
1321        return true;
1322    }
1323}
1324
1325
1326void MediaPlayerService::Client::addNewMetadataUpdate(media::Metadata::Type metadata_type) {
1327    Mutex::Autolock lock(mLock);
1328    if (mMetadataUpdated.indexOf(metadata_type) < 0) {
1329        mMetadataUpdated.add(metadata_type);
1330    }
1331}
1332
1333#if CALLBACK_ANTAGONIZER
1334const int Antagonizer::interval = 10000; // 10 msecs
1335
1336Antagonizer::Antagonizer(notify_callback_f cb, void* client) :
1337    mExit(false), mActive(false), mClient(client), mCb(cb)
1338{
1339    createThread(callbackThread, this);
1340}
1341
1342void Antagonizer::kill()
1343{
1344    Mutex::Autolock _l(mLock);
1345    mActive = false;
1346    mExit = true;
1347    mCondition.wait(mLock);
1348}
1349
1350int Antagonizer::callbackThread(void* user)
1351{
1352    ALOGD("Antagonizer started");
1353    Antagonizer* p = reinterpret_cast<Antagonizer*>(user);
1354    while (!p->mExit) {
1355        if (p->mActive) {
1356            ALOGV("send event");
1357            p->mCb(p->mClient, 0, 0, 0);
1358        }
1359        usleep(interval);
1360    }
1361    Mutex::Autolock _l(p->mLock);
1362    p->mCondition.signal();
1363    ALOGD("Antagonizer stopped");
1364    return 0;
1365}
1366#endif
1367
1368#undef LOG_TAG
1369#define LOG_TAG "AudioSink"
1370MediaPlayerService::AudioOutput::AudioOutput(audio_session_t sessionId, int uid, int pid,
1371        const audio_attributes_t* attr)
1372    : mCallback(NULL),
1373      mCallbackCookie(NULL),
1374      mCallbackData(NULL),
1375      mStreamType(AUDIO_STREAM_MUSIC),
1376      mLeftVolume(1.0),
1377      mRightVolume(1.0),
1378      mPlaybackRate(AUDIO_PLAYBACK_RATE_DEFAULT),
1379      mSampleRateHz(0),
1380      mMsecsPerFrame(0),
1381      mFrameSize(0),
1382      mSessionId(sessionId),
1383      mUid(uid),
1384      mPid(pid),
1385      mSendLevel(0.0),
1386      mAuxEffectId(0),
1387      mFlags(AUDIO_OUTPUT_FLAG_NONE)
1388{
1389    ALOGV("AudioOutput(%d)", sessionId);
1390    if (attr != NULL) {
1391        mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1392        if (mAttributes != NULL) {
1393            memcpy(mAttributes, attr, sizeof(audio_attributes_t));
1394            mStreamType = audio_attributes_to_stream_type(attr);
1395        }
1396    } else {
1397        mAttributes = NULL;
1398    }
1399
1400    setMinBufferCount();
1401}
1402
1403MediaPlayerService::AudioOutput::~AudioOutput()
1404{
1405    close();
1406    free(mAttributes);
1407    delete mCallbackData;
1408}
1409
1410//static
1411void MediaPlayerService::AudioOutput::setMinBufferCount()
1412{
1413    char value[PROPERTY_VALUE_MAX];
1414    if (property_get("ro.kernel.qemu", value, 0)) {
1415        mIsOnEmulator = true;
1416        mMinBufferCount = 12;  // to prevent systematic buffer underrun for emulator
1417    }
1418}
1419
1420// static
1421bool MediaPlayerService::AudioOutput::isOnEmulator()
1422{
1423    setMinBufferCount(); // benign race wrt other threads
1424    return mIsOnEmulator;
1425}
1426
1427// static
1428int MediaPlayerService::AudioOutput::getMinBufferCount()
1429{
1430    setMinBufferCount(); // benign race wrt other threads
1431    return mMinBufferCount;
1432}
1433
1434ssize_t MediaPlayerService::AudioOutput::bufferSize() const
1435{
1436    Mutex::Autolock lock(mLock);
1437    if (mTrack == 0) return NO_INIT;
1438    return mTrack->frameCount() * mFrameSize;
1439}
1440
1441ssize_t MediaPlayerService::AudioOutput::frameCount() const
1442{
1443    Mutex::Autolock lock(mLock);
1444    if (mTrack == 0) return NO_INIT;
1445    return mTrack->frameCount();
1446}
1447
1448ssize_t MediaPlayerService::AudioOutput::channelCount() const
1449{
1450    Mutex::Autolock lock(mLock);
1451    if (mTrack == 0) return NO_INIT;
1452    return mTrack->channelCount();
1453}
1454
1455ssize_t MediaPlayerService::AudioOutput::frameSize() const
1456{
1457    Mutex::Autolock lock(mLock);
1458    if (mTrack == 0) return NO_INIT;
1459    return mFrameSize;
1460}
1461
1462uint32_t MediaPlayerService::AudioOutput::latency () const
1463{
1464    Mutex::Autolock lock(mLock);
1465    if (mTrack == 0) return 0;
1466    return mTrack->latency();
1467}
1468
1469float MediaPlayerService::AudioOutput::msecsPerFrame() const
1470{
1471    Mutex::Autolock lock(mLock);
1472    return mMsecsPerFrame;
1473}
1474
1475status_t MediaPlayerService::AudioOutput::getPosition(uint32_t *position) const
1476{
1477    Mutex::Autolock lock(mLock);
1478    if (mTrack == 0) return NO_INIT;
1479    return mTrack->getPosition(position);
1480}
1481
1482status_t MediaPlayerService::AudioOutput::getTimestamp(AudioTimestamp &ts) const
1483{
1484    Mutex::Autolock lock(mLock);
1485    if (mTrack == 0) return NO_INIT;
1486    return mTrack->getTimestamp(ts);
1487}
1488
1489// TODO: Remove unnecessary calls to getPlayedOutDurationUs()
1490// as it acquires locks and may query the audio driver.
1491//
1492// Some calls could conceivably retrieve extrapolated data instead of
1493// accessing getTimestamp() or getPosition() every time a data buffer with
1494// a media time is received.
1495//
1496// Calculate duration of played samples if played at normal rate (i.e., 1.0).
1497int64_t MediaPlayerService::AudioOutput::getPlayedOutDurationUs(int64_t nowUs) const
1498{
1499    Mutex::Autolock lock(mLock);
1500    if (mTrack == 0 || mSampleRateHz == 0) {
1501        return 0;
1502    }
1503
1504    uint32_t numFramesPlayed;
1505    int64_t numFramesPlayedAt;
1506    AudioTimestamp ts;
1507    static const int64_t kStaleTimestamp100ms = 100000;
1508
1509    status_t res = mTrack->getTimestamp(ts);
1510    if (res == OK) {                 // case 1: mixing audio tracks and offloaded tracks.
1511        numFramesPlayed = ts.mPosition;
1512        numFramesPlayedAt = ts.mTime.tv_sec * 1000000LL + ts.mTime.tv_nsec / 1000;
1513        const int64_t timestampAge = nowUs - numFramesPlayedAt;
1514        if (timestampAge > kStaleTimestamp100ms) {
1515            // This is an audio FIXME.
1516            // getTimestamp returns a timestamp which may come from audio mixing threads.
1517            // After pausing, the MixerThread may go idle, thus the mTime estimate may
1518            // become stale. Assuming that the MixerThread runs 20ms, with FastMixer at 5ms,
1519            // the max latency should be about 25ms with an average around 12ms (to be verified).
1520            // For safety we use 100ms.
1521            ALOGV("getTimestamp: returned stale timestamp nowUs(%lld) numFramesPlayedAt(%lld)",
1522                    (long long)nowUs, (long long)numFramesPlayedAt);
1523            numFramesPlayedAt = nowUs - kStaleTimestamp100ms;
1524        }
1525        //ALOGD("getTimestamp: OK %d %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1526    } else if (res == WOULD_BLOCK) { // case 2: transitory state on start of a new track
1527        numFramesPlayed = 0;
1528        numFramesPlayedAt = nowUs;
1529        //ALOGD("getTimestamp: WOULD_BLOCK %d %lld",
1530        //        numFramesPlayed, (long long)numFramesPlayedAt);
1531    } else {                         // case 3: transitory at new track or audio fast tracks.
1532        res = mTrack->getPosition(&numFramesPlayed);
1533        CHECK_EQ(res, (status_t)OK);
1534        numFramesPlayedAt = nowUs;
1535        numFramesPlayedAt += 1000LL * mTrack->latency() / 2; /* XXX */
1536        //ALOGD("getPosition: %u %lld", numFramesPlayed, (long long)numFramesPlayedAt);
1537    }
1538
1539    // CHECK_EQ(numFramesPlayed & (1 << 31), 0);  // can't be negative until 12.4 hrs, test
1540    // TODO: remove the (int32_t) casting below as it may overflow at 12.4 hours.
1541    int64_t durationUs = (int64_t)((int32_t)numFramesPlayed * 1000000LL / mSampleRateHz)
1542            + nowUs - numFramesPlayedAt;
1543    if (durationUs < 0) {
1544        // Occurs when numFramesPlayed position is very small and the following:
1545        // (1) In case 1, the time nowUs is computed before getTimestamp() is called and
1546        //     numFramesPlayedAt is greater than nowUs by time more than numFramesPlayed.
1547        // (2) In case 3, using getPosition and adding mAudioSink->latency() to
1548        //     numFramesPlayedAt, by a time amount greater than numFramesPlayed.
1549        //
1550        // Both of these are transitory conditions.
1551        ALOGV("getPlayedOutDurationUs: negative duration %lld set to zero", (long long)durationUs);
1552        durationUs = 0;
1553    }
1554    ALOGV("getPlayedOutDurationUs(%lld) nowUs(%lld) frames(%u) framesAt(%lld)",
1555            (long long)durationUs, (long long)nowUs, numFramesPlayed, (long long)numFramesPlayedAt);
1556    return durationUs;
1557}
1558
1559status_t MediaPlayerService::AudioOutput::getFramesWritten(uint32_t *frameswritten) const
1560{
1561    Mutex::Autolock lock(mLock);
1562    if (mTrack == 0) return NO_INIT;
1563    ExtendedTimestamp ets;
1564    status_t status = mTrack->getTimestamp(&ets);
1565    if (status == OK || status == WOULD_BLOCK) {
1566        *frameswritten = (uint32_t)ets.mPosition[ExtendedTimestamp::LOCATION_CLIENT];
1567    }
1568    return status;
1569}
1570
1571status_t MediaPlayerService::AudioOutput::setParameters(const String8& keyValuePairs)
1572{
1573    Mutex::Autolock lock(mLock);
1574    if (mTrack == 0) return NO_INIT;
1575    return mTrack->setParameters(keyValuePairs);
1576}
1577
1578String8  MediaPlayerService::AudioOutput::getParameters(const String8& keys)
1579{
1580    Mutex::Autolock lock(mLock);
1581    if (mTrack == 0) return String8::empty();
1582    return mTrack->getParameters(keys);
1583}
1584
1585void MediaPlayerService::AudioOutput::setAudioAttributes(const audio_attributes_t * attributes) {
1586    Mutex::Autolock lock(mLock);
1587    if (attributes == NULL) {
1588        free(mAttributes);
1589        mAttributes = NULL;
1590    } else {
1591        if (mAttributes == NULL) {
1592            mAttributes = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t));
1593        }
1594        memcpy(mAttributes, attributes, sizeof(audio_attributes_t));
1595        mStreamType = audio_attributes_to_stream_type(attributes);
1596    }
1597}
1598
1599void MediaPlayerService::AudioOutput::setAudioStreamType(audio_stream_type_t streamType)
1600{
1601    Mutex::Autolock lock(mLock);
1602    // do not allow direct stream type modification if attributes have been set
1603    if (mAttributes == NULL) {
1604        mStreamType = streamType;
1605    }
1606}
1607
1608void MediaPlayerService::AudioOutput::deleteRecycledTrack_l()
1609{
1610    ALOGV("deleteRecycledTrack_l");
1611    if (mRecycledTrack != 0) {
1612
1613        if (mCallbackData != NULL) {
1614            mCallbackData->setOutput(NULL);
1615            mCallbackData->endTrackSwitch();
1616        }
1617
1618        if ((mRecycledTrack->getFlags() & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) == 0) {
1619            int32_t msec = 0;
1620            if (!mRecycledTrack->stopped()) { // check if active
1621                 (void)mRecycledTrack->pendingDuration(&msec);
1622            }
1623            mRecycledTrack->stop(); // ensure full data drain
1624            ALOGD("deleting recycled track, waiting for data drain (%d msec)", msec);
1625            if (msec > 0) {
1626                static const int32_t WAIT_LIMIT_MS = 3000;
1627                if (msec > WAIT_LIMIT_MS) {
1628                    msec = WAIT_LIMIT_MS;
1629                }
1630                usleep(msec * 1000LL);
1631            }
1632        }
1633        // An offloaded track isn't flushed because the STREAM_END is reported
1634        // slightly prematurely to allow time for the gapless track switch
1635        // but this means that if we decide not to recycle the track there
1636        // could be a small amount of residual data still playing. We leave
1637        // AudioFlinger to drain the track.
1638
1639        mRecycledTrack.clear();
1640        close_l();
1641        delete mCallbackData;
1642        mCallbackData = NULL;
1643    }
1644}
1645
1646void MediaPlayerService::AudioOutput::close_l()
1647{
1648    mTrack.clear();
1649}
1650
1651status_t MediaPlayerService::AudioOutput::open(
1652        uint32_t sampleRate, int channelCount, audio_channel_mask_t channelMask,
1653        audio_format_t format, int bufferCount,
1654        AudioCallback cb, void *cookie,
1655        audio_output_flags_t flags,
1656        const audio_offload_info_t *offloadInfo,
1657        bool doNotReconnect,
1658        uint32_t suggestedFrameCount)
1659{
1660    ALOGV("open(%u, %d, 0x%x, 0x%x, %d, %d 0x%x)", sampleRate, channelCount, channelMask,
1661                format, bufferCount, mSessionId, flags);
1662
1663    // offloading is only supported in callback mode for now.
1664    // offloadInfo must be present if offload flag is set
1665    if (((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) &&
1666            ((cb == NULL) || (offloadInfo == NULL))) {
1667        return BAD_VALUE;
1668    }
1669
1670    // compute frame count for the AudioTrack internal buffer
1671    size_t frameCount;
1672    if ((flags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
1673        frameCount = 0; // AudioTrack will get frame count from AudioFlinger
1674    } else {
1675        // try to estimate the buffer processing fetch size from AudioFlinger.
1676        // framesPerBuffer is approximate and generally correct, except when it's not :-).
1677        uint32_t afSampleRate;
1678        size_t afFrameCount;
1679        if (AudioSystem::getOutputFrameCount(&afFrameCount, mStreamType) != NO_ERROR) {
1680            return NO_INIT;
1681        }
1682        if (AudioSystem::getOutputSamplingRate(&afSampleRate, mStreamType) != NO_ERROR) {
1683            return NO_INIT;
1684        }
1685        const size_t framesPerBuffer =
1686                (unsigned long long)sampleRate * afFrameCount / afSampleRate;
1687
1688        if (bufferCount == 0) {
1689            // use suggestedFrameCount
1690            bufferCount = (suggestedFrameCount + framesPerBuffer - 1) / framesPerBuffer;
1691        }
1692        // Check argument bufferCount against the mininum buffer count
1693        if (bufferCount != 0 && bufferCount < mMinBufferCount) {
1694            ALOGV("bufferCount (%d) increased to %d", bufferCount, mMinBufferCount);
1695            bufferCount = mMinBufferCount;
1696        }
1697        // if frameCount is 0, then AudioTrack will get frame count from AudioFlinger
1698        // which will be the minimum size permitted.
1699        frameCount = bufferCount * framesPerBuffer;
1700    }
1701
1702    if (channelMask == CHANNEL_MASK_USE_CHANNEL_ORDER) {
1703        channelMask = audio_channel_out_mask_from_count(channelCount);
1704        if (0 == channelMask) {
1705            ALOGE("open() error, can\'t derive mask for %d audio channels", channelCount);
1706            return NO_INIT;
1707        }
1708    }
1709
1710    Mutex::Autolock lock(mLock);
1711    mCallback = cb;
1712    mCallbackCookie = cookie;
1713
1714    // Check whether we can recycle the track
1715    bool reuse = false;
1716    bool bothOffloaded = false;
1717
1718    if (mRecycledTrack != 0) {
1719        // check whether we are switching between two offloaded tracks
1720        bothOffloaded = (flags & mRecycledTrack->getFlags()
1721                                & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0;
1722
1723        // check if the existing track can be reused as-is, or if a new track needs to be created.
1724        reuse = true;
1725
1726        if ((mCallbackData == NULL && mCallback != NULL) ||
1727                (mCallbackData != NULL && mCallback == NULL)) {
1728            // recycled track uses callbacks but the caller wants to use writes, or vice versa
1729            ALOGV("can't chain callback and write");
1730            reuse = false;
1731        } else if ((mRecycledTrack->getSampleRate() != sampleRate) ||
1732                (mRecycledTrack->channelCount() != (uint32_t)channelCount) ) {
1733            ALOGV("samplerate, channelcount differ: %u/%u Hz, %u/%d ch",
1734                  mRecycledTrack->getSampleRate(), sampleRate,
1735                  mRecycledTrack->channelCount(), channelCount);
1736            reuse = false;
1737        } else if (flags != mFlags) {
1738            ALOGV("output flags differ %08x/%08x", flags, mFlags);
1739            reuse = false;
1740        } else if (mRecycledTrack->format() != format) {
1741            reuse = false;
1742        }
1743    } else {
1744        ALOGV("no track available to recycle");
1745    }
1746
1747    ALOGV_IF(bothOffloaded, "both tracks offloaded");
1748
1749    // If we can't recycle and both tracks are offloaded
1750    // we must close the previous output before opening a new one
1751    if (bothOffloaded && !reuse) {
1752        ALOGV("both offloaded and not recycling");
1753        deleteRecycledTrack_l();
1754    }
1755
1756    sp<AudioTrack> t;
1757    CallbackData *newcbd = NULL;
1758
1759    // We don't attempt to create a new track if we are recycling an
1760    // offloaded track. But, if we are recycling a non-offloaded or we
1761    // are switching where one is offloaded and one isn't then we create
1762    // the new track in advance so that we can read additional stream info
1763
1764    if (!(reuse && bothOffloaded)) {
1765        ALOGV("creating new AudioTrack");
1766
1767        if (mCallback != NULL) {
1768            newcbd = new CallbackData(this);
1769            t = new AudioTrack(
1770                    mStreamType,
1771                    sampleRate,
1772                    format,
1773                    channelMask,
1774                    frameCount,
1775                    flags,
1776                    CallbackWrapper,
1777                    newcbd,
1778                    0,  // notification frames
1779                    mSessionId,
1780                    AudioTrack::TRANSFER_CALLBACK,
1781                    offloadInfo,
1782                    mUid,
1783                    mPid,
1784                    mAttributes,
1785                    doNotReconnect);
1786        } else {
1787            // TODO: Due to buffer memory concerns, we use a max target playback speed
1788            // based on mPlaybackRate at the time of open (instead of kMaxRequiredSpeed),
1789            // also clamping the target speed to 1.0 <= targetSpeed <= kMaxRequiredSpeed.
1790            const float targetSpeed =
1791                    std::min(std::max(mPlaybackRate.mSpeed, 1.0f), kMaxRequiredSpeed);
1792            ALOGW_IF(targetSpeed != mPlaybackRate.mSpeed,
1793                    "track target speed:%f clamped from playback speed:%f",
1794                    targetSpeed, mPlaybackRate.mSpeed);
1795            t = new AudioTrack(
1796                    mStreamType,
1797                    sampleRate,
1798                    format,
1799                    channelMask,
1800                    frameCount,
1801                    flags,
1802                    NULL, // callback
1803                    NULL, // user data
1804                    0, // notification frames
1805                    mSessionId,
1806                    AudioTrack::TRANSFER_DEFAULT,
1807                    NULL, // offload info
1808                    mUid,
1809                    mPid,
1810                    mAttributes,
1811                    doNotReconnect,
1812                    targetSpeed);
1813        }
1814
1815        if ((t == 0) || (t->initCheck() != NO_ERROR)) {
1816            ALOGE("Unable to create audio track");
1817            delete newcbd;
1818            // t goes out of scope, so reference count drops to zero
1819            return NO_INIT;
1820        } else {
1821            // successful AudioTrack initialization implies a legacy stream type was generated
1822            // from the audio attributes
1823            mStreamType = t->streamType();
1824        }
1825    }
1826
1827    if (reuse) {
1828        CHECK(mRecycledTrack != NULL);
1829
1830        if (!bothOffloaded) {
1831            if (mRecycledTrack->frameCount() != t->frameCount()) {
1832                ALOGV("framecount differs: %zu/%zu frames",
1833                      mRecycledTrack->frameCount(), t->frameCount());
1834                reuse = false;
1835            }
1836        }
1837
1838        if (reuse) {
1839            ALOGV("chaining to next output and recycling track");
1840            close_l();
1841            mTrack = mRecycledTrack;
1842            mRecycledTrack.clear();
1843            if (mCallbackData != NULL) {
1844                mCallbackData->setOutput(this);
1845            }
1846            delete newcbd;
1847            return OK;
1848        }
1849    }
1850
1851    // we're not going to reuse the track, unblock and flush it
1852    // this was done earlier if both tracks are offloaded
1853    if (!bothOffloaded) {
1854        deleteRecycledTrack_l();
1855    }
1856
1857    CHECK((t != NULL) && ((mCallback == NULL) || (newcbd != NULL)));
1858
1859    mCallbackData = newcbd;
1860    ALOGV("setVolume");
1861    t->setVolume(mLeftVolume, mRightVolume);
1862
1863    mSampleRateHz = sampleRate;
1864    mFlags = flags;
1865    mMsecsPerFrame = 1E3f / (mPlaybackRate.mSpeed * sampleRate);
1866    mFrameSize = t->frameSize();
1867    mTrack = t;
1868
1869    status_t res = NO_ERROR;
1870    // Note some output devices may give us a direct track even though we don't specify it.
1871    // Example: Line application b/17459982.
1872    if ((t->getFlags() & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD | AUDIO_OUTPUT_FLAG_DIRECT)) == 0) {
1873        res = t->setPlaybackRate(mPlaybackRate);
1874        if (res == NO_ERROR) {
1875            t->setAuxEffectSendLevel(mSendLevel);
1876            res = t->attachAuxEffect(mAuxEffectId);
1877        }
1878    }
1879    ALOGV("open() DONE status %d", res);
1880    return res;
1881}
1882
1883status_t MediaPlayerService::AudioOutput::start()
1884{
1885    ALOGV("start");
1886    Mutex::Autolock lock(mLock);
1887    if (mCallbackData != NULL) {
1888        mCallbackData->endTrackSwitch();
1889    }
1890    if (mTrack != 0) {
1891        mTrack->setVolume(mLeftVolume, mRightVolume);
1892        mTrack->setAuxEffectSendLevel(mSendLevel);
1893        return mTrack->start();
1894    }
1895    return NO_INIT;
1896}
1897
1898void MediaPlayerService::AudioOutput::setNextOutput(const sp<AudioOutput>& nextOutput) {
1899    Mutex::Autolock lock(mLock);
1900    mNextOutput = nextOutput;
1901}
1902
1903void MediaPlayerService::AudioOutput::switchToNextOutput() {
1904    ALOGV("switchToNextOutput");
1905
1906    // Try to acquire the callback lock before moving track (without incurring deadlock).
1907    const unsigned kMaxSwitchTries = 100;
1908    Mutex::Autolock lock(mLock);
1909    for (unsigned tries = 0;;) {
1910        if (mTrack == 0) {
1911            return;
1912        }
1913        if (mNextOutput != NULL && mNextOutput != this) {
1914            if (mCallbackData != NULL) {
1915                // two alternative approaches
1916#if 1
1917                CallbackData *callbackData = mCallbackData;
1918                mLock.unlock();
1919                // proper acquisition sequence
1920                callbackData->lock();
1921                mLock.lock();
1922                // Caution: it is unlikely that someone deleted our callback or changed our target
1923                if (callbackData != mCallbackData || mNextOutput == NULL || mNextOutput == this) {
1924                    // fatal if we are starved out.
1925                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1926                            "switchToNextOutput() cannot obtain correct lock sequence");
1927                    callbackData->unlock();
1928                    continue;
1929                }
1930                callbackData->mSwitching = true; // begin track switch
1931#else
1932                // tryBeginTrackSwitch() returns false if the callback has the lock.
1933                if (!mCallbackData->tryBeginTrackSwitch()) {
1934                    // fatal if we are starved out.
1935                    LOG_ALWAYS_FATAL_IF(++tries > kMaxSwitchTries,
1936                            "switchToNextOutput() cannot obtain callback lock");
1937                    mLock.unlock();
1938                    usleep(5 * 1000 /* usec */); // allow callback to use AudioOutput
1939                    mLock.lock();
1940                    continue;
1941                }
1942#endif
1943            }
1944
1945            Mutex::Autolock nextLock(mNextOutput->mLock);
1946
1947            // If the next output track is not NULL, then it has been
1948            // opened already for playback.
1949            // This is possible even without the next player being started,
1950            // for example, the next player could be prepared and seeked.
1951            //
1952            // Presuming it isn't advisable to force the track over.
1953             if (mNextOutput->mTrack == NULL) {
1954                ALOGD("Recycling track for gapless playback");
1955                delete mNextOutput->mCallbackData;
1956                mNextOutput->mCallbackData = mCallbackData;
1957                mNextOutput->mRecycledTrack = mTrack;
1958                mNextOutput->mSampleRateHz = mSampleRateHz;
1959                mNextOutput->mMsecsPerFrame = mMsecsPerFrame;
1960                mNextOutput->mFlags = mFlags;
1961                mNextOutput->mFrameSize = mFrameSize;
1962                close_l();
1963                mCallbackData = NULL;  // destruction handled by mNextOutput
1964            } else {
1965                ALOGW("Ignoring gapless playback because next player has already started");
1966                // remove track in case resource needed for future players.
1967                if (mCallbackData != NULL) {
1968                    mCallbackData->endTrackSwitch();  // release lock for callbacks before close.
1969                }
1970                close_l();
1971            }
1972        }
1973        break;
1974    }
1975}
1976
1977ssize_t MediaPlayerService::AudioOutput::write(const void* buffer, size_t size, bool blocking)
1978{
1979    Mutex::Autolock lock(mLock);
1980    LOG_ALWAYS_FATAL_IF(mCallback != NULL, "Don't call write if supplying a callback.");
1981
1982    //ALOGV("write(%p, %u)", buffer, size);
1983    if (mTrack != 0) {
1984        return mTrack->write(buffer, size, blocking);
1985    }
1986    return NO_INIT;
1987}
1988
1989void MediaPlayerService::AudioOutput::stop()
1990{
1991    ALOGV("stop");
1992    Mutex::Autolock lock(mLock);
1993    if (mTrack != 0) mTrack->stop();
1994}
1995
1996void MediaPlayerService::AudioOutput::flush()
1997{
1998    ALOGV("flush");
1999    Mutex::Autolock lock(mLock);
2000    if (mTrack != 0) mTrack->flush();
2001}
2002
2003void MediaPlayerService::AudioOutput::pause()
2004{
2005    ALOGV("pause");
2006    Mutex::Autolock lock(mLock);
2007    if (mTrack != 0) mTrack->pause();
2008}
2009
2010void MediaPlayerService::AudioOutput::close()
2011{
2012    ALOGV("close");
2013    sp<AudioTrack> track;
2014    {
2015        Mutex::Autolock lock(mLock);
2016        track = mTrack;
2017        close_l(); // clears mTrack
2018    }
2019    // destruction of the track occurs outside of mutex.
2020}
2021
2022void MediaPlayerService::AudioOutput::setVolume(float left, float right)
2023{
2024    ALOGV("setVolume(%f, %f)", left, right);
2025    Mutex::Autolock lock(mLock);
2026    mLeftVolume = left;
2027    mRightVolume = right;
2028    if (mTrack != 0) {
2029        mTrack->setVolume(left, right);
2030    }
2031}
2032
2033status_t MediaPlayerService::AudioOutput::setPlaybackRate(const AudioPlaybackRate &rate)
2034{
2035    ALOGV("setPlaybackRate(%f %f %d %d)",
2036                rate.mSpeed, rate.mPitch, rate.mFallbackMode, rate.mStretchMode);
2037    Mutex::Autolock lock(mLock);
2038    if (mTrack == 0) {
2039        // remember rate so that we can set it when the track is opened
2040        mPlaybackRate = rate;
2041        return OK;
2042    }
2043    status_t res = mTrack->setPlaybackRate(rate);
2044    if (res != NO_ERROR) {
2045        return res;
2046    }
2047    // rate.mSpeed is always greater than 0 if setPlaybackRate succeeded
2048    CHECK_GT(rate.mSpeed, 0.f);
2049    mPlaybackRate = rate;
2050    if (mSampleRateHz != 0) {
2051        mMsecsPerFrame = 1E3f / (rate.mSpeed * mSampleRateHz);
2052    }
2053    return res;
2054}
2055
2056status_t MediaPlayerService::AudioOutput::getPlaybackRate(AudioPlaybackRate *rate)
2057{
2058    ALOGV("setPlaybackRate");
2059    Mutex::Autolock lock(mLock);
2060    if (mTrack == 0) {
2061        return NO_INIT;
2062    }
2063    *rate = mTrack->getPlaybackRate();
2064    return NO_ERROR;
2065}
2066
2067status_t MediaPlayerService::AudioOutput::setAuxEffectSendLevel(float level)
2068{
2069    ALOGV("setAuxEffectSendLevel(%f)", level);
2070    Mutex::Autolock lock(mLock);
2071    mSendLevel = level;
2072    if (mTrack != 0) {
2073        return mTrack->setAuxEffectSendLevel(level);
2074    }
2075    return NO_ERROR;
2076}
2077
2078status_t MediaPlayerService::AudioOutput::attachAuxEffect(int effectId)
2079{
2080    ALOGV("attachAuxEffect(%d)", effectId);
2081    Mutex::Autolock lock(mLock);
2082    mAuxEffectId = effectId;
2083    if (mTrack != 0) {
2084        return mTrack->attachAuxEffect(effectId);
2085    }
2086    return NO_ERROR;
2087}
2088
2089// static
2090void MediaPlayerService::AudioOutput::CallbackWrapper(
2091        int event, void *cookie, void *info) {
2092    //ALOGV("callbackwrapper");
2093    CallbackData *data = (CallbackData*)cookie;
2094    // lock to ensure we aren't caught in the middle of a track switch.
2095    data->lock();
2096    AudioOutput *me = data->getOutput();
2097    AudioTrack::Buffer *buffer = (AudioTrack::Buffer *)info;
2098    if (me == NULL) {
2099        // no output set, likely because the track was scheduled to be reused
2100        // by another player, but the format turned out to be incompatible.
2101        data->unlock();
2102        if (buffer != NULL) {
2103            buffer->size = 0;
2104        }
2105        return;
2106    }
2107
2108    switch(event) {
2109    case AudioTrack::EVENT_MORE_DATA: {
2110        size_t actualSize = (*me->mCallback)(
2111                me, buffer->raw, buffer->size, me->mCallbackCookie,
2112                CB_EVENT_FILL_BUFFER);
2113
2114        // Log when no data is returned from the callback.
2115        // (1) We may have no data (especially with network streaming sources).
2116        // (2) We may have reached the EOS and the audio track is not stopped yet.
2117        // Note that AwesomePlayer/AudioPlayer will only return zero size when it reaches the EOS.
2118        // NuPlayerRenderer will return zero when it doesn't have data (it doesn't block to fill).
2119        //
2120        // This is a benign busy-wait, with the next data request generated 10 ms or more later;
2121        // nevertheless for power reasons, we don't want to see too many of these.
2122
2123        ALOGV_IF(actualSize == 0 && buffer->size > 0, "callbackwrapper: empty buffer returned");
2124
2125        buffer->size = actualSize;
2126        } break;
2127
2128    case AudioTrack::EVENT_STREAM_END:
2129        // currently only occurs for offloaded callbacks
2130        ALOGV("callbackwrapper: deliver EVENT_STREAM_END");
2131        (*me->mCallback)(me, NULL /* buffer */, 0 /* size */,
2132                me->mCallbackCookie, CB_EVENT_STREAM_END);
2133        break;
2134
2135    case AudioTrack::EVENT_NEW_IAUDIOTRACK :
2136        ALOGV("callbackwrapper: deliver EVENT_TEAR_DOWN");
2137        (*me->mCallback)(me,  NULL /* buffer */, 0 /* size */,
2138                me->mCallbackCookie, CB_EVENT_TEAR_DOWN);
2139        break;
2140
2141    case AudioTrack::EVENT_UNDERRUN:
2142        // This occurs when there is no data available, typically
2143        // when there is a failure to supply data to the AudioTrack.  It can also
2144        // occur in non-offloaded mode when the audio device comes out of standby.
2145        //
2146        // If an AudioTrack underruns it outputs silence. Since this happens suddenly
2147        // it may sound like an audible pop or glitch.
2148        //
2149        // The underrun event is sent once per track underrun; the condition is reset
2150        // when more data is sent to the AudioTrack.
2151        ALOGD("callbackwrapper: EVENT_UNDERRUN (discarded)");
2152        break;
2153
2154    default:
2155        ALOGE("received unknown event type: %d inside CallbackWrapper !", event);
2156    }
2157
2158    data->unlock();
2159}
2160
2161audio_session_t MediaPlayerService::AudioOutput::getSessionId() const
2162{
2163    Mutex::Autolock lock(mLock);
2164    return mSessionId;
2165}
2166
2167uint32_t MediaPlayerService::AudioOutput::getSampleRate() const
2168{
2169    Mutex::Autolock lock(mLock);
2170    if (mTrack == 0) return 0;
2171    return mTrack->getSampleRate();
2172}
2173
2174int64_t MediaPlayerService::AudioOutput::getBufferDurationInUs() const
2175{
2176    Mutex::Autolock lock(mLock);
2177    if (mTrack == 0) {
2178        return 0;
2179    }
2180    int64_t duration;
2181    if (mTrack->getBufferDurationInUs(&duration) != OK) {
2182        return 0;
2183    }
2184    return duration;
2185}
2186
2187////////////////////////////////////////////////////////////////////////////////
2188
2189struct CallbackThread : public Thread {
2190    CallbackThread(const wp<MediaPlayerBase::AudioSink> &sink,
2191                   MediaPlayerBase::AudioSink::AudioCallback cb,
2192                   void *cookie);
2193
2194protected:
2195    virtual ~CallbackThread();
2196
2197    virtual bool threadLoop();
2198
2199private:
2200    wp<MediaPlayerBase::AudioSink> mSink;
2201    MediaPlayerBase::AudioSink::AudioCallback mCallback;
2202    void *mCookie;
2203    void *mBuffer;
2204    size_t mBufferSize;
2205
2206    CallbackThread(const CallbackThread &);
2207    CallbackThread &operator=(const CallbackThread &);
2208};
2209
2210CallbackThread::CallbackThread(
2211        const wp<MediaPlayerBase::AudioSink> &sink,
2212        MediaPlayerBase::AudioSink::AudioCallback cb,
2213        void *cookie)
2214    : mSink(sink),
2215      mCallback(cb),
2216      mCookie(cookie),
2217      mBuffer(NULL),
2218      mBufferSize(0) {
2219}
2220
2221CallbackThread::~CallbackThread() {
2222    if (mBuffer) {
2223        free(mBuffer);
2224        mBuffer = NULL;
2225    }
2226}
2227
2228bool CallbackThread::threadLoop() {
2229    sp<MediaPlayerBase::AudioSink> sink = mSink.promote();
2230    if (sink == NULL) {
2231        return false;
2232    }
2233
2234    if (mBuffer == NULL) {
2235        mBufferSize = sink->bufferSize();
2236        mBuffer = malloc(mBufferSize);
2237    }
2238
2239    size_t actualSize =
2240        (*mCallback)(sink.get(), mBuffer, mBufferSize, mCookie,
2241                MediaPlayerBase::AudioSink::CB_EVENT_FILL_BUFFER);
2242
2243    if (actualSize > 0) {
2244        sink->write(mBuffer, actualSize);
2245        // Could return false on sink->write() error or short count.
2246        // Not necessarily appropriate but would work for AudioCache behavior.
2247    }
2248
2249    return true;
2250}
2251
2252////////////////////////////////////////////////////////////////////////////////
2253
2254void MediaPlayerService::addBatteryData(uint32_t params)
2255{
2256    Mutex::Autolock lock(mLock);
2257
2258    int32_t time = systemTime() / 1000000L;
2259
2260    // change audio output devices. This notification comes from AudioFlinger
2261    if ((params & kBatteryDataSpeakerOn)
2262            || (params & kBatteryDataOtherAudioDeviceOn)) {
2263
2264        int deviceOn[NUM_AUDIO_DEVICES];
2265        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2266            deviceOn[i] = 0;
2267        }
2268
2269        if ((params & kBatteryDataSpeakerOn)
2270                && (params & kBatteryDataOtherAudioDeviceOn)) {
2271            deviceOn[SPEAKER_AND_OTHER] = 1;
2272        } else if (params & kBatteryDataSpeakerOn) {
2273            deviceOn[SPEAKER] = 1;
2274        } else {
2275            deviceOn[OTHER_AUDIO_DEVICE] = 1;
2276        }
2277
2278        for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2279            if (mBatteryAudio.deviceOn[i] != deviceOn[i]){
2280
2281                if (mBatteryAudio.refCount > 0) { // if playing audio
2282                    if (!deviceOn[i]) {
2283                        mBatteryAudio.lastTime[i] += time;
2284                        mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2285                        mBatteryAudio.lastTime[i] = 0;
2286                    } else {
2287                        mBatteryAudio.lastTime[i] = 0 - time;
2288                    }
2289                }
2290
2291                mBatteryAudio.deviceOn[i] = deviceOn[i];
2292            }
2293        }
2294        return;
2295    }
2296
2297    // an audio stream is started
2298    if (params & kBatteryDataAudioFlingerStart) {
2299        // record the start time only if currently no other audio
2300        // is being played
2301        if (mBatteryAudio.refCount == 0) {
2302            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2303                if (mBatteryAudio.deviceOn[i]) {
2304                    mBatteryAudio.lastTime[i] -= time;
2305                }
2306            }
2307        }
2308
2309        mBatteryAudio.refCount ++;
2310        return;
2311
2312    } else if (params & kBatteryDataAudioFlingerStop) {
2313        if (mBatteryAudio.refCount <= 0) {
2314            ALOGW("Battery track warning: refCount is <= 0");
2315            return;
2316        }
2317
2318        // record the stop time only if currently this is the only
2319        // audio being played
2320        if (mBatteryAudio.refCount == 1) {
2321            for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2322                if (mBatteryAudio.deviceOn[i]) {
2323                    mBatteryAudio.lastTime[i] += time;
2324                    mBatteryAudio.totalTime[i] += mBatteryAudio.lastTime[i];
2325                    mBatteryAudio.lastTime[i] = 0;
2326                }
2327            }
2328        }
2329
2330        mBatteryAudio.refCount --;
2331        return;
2332    }
2333
2334    int uid = IPCThreadState::self()->getCallingUid();
2335    if (uid == AID_MEDIA) {
2336        return;
2337    }
2338    int index = mBatteryData.indexOfKey(uid);
2339
2340    if (index < 0) { // create a new entry for this UID
2341        BatteryUsageInfo info;
2342        info.audioTotalTime = 0;
2343        info.videoTotalTime = 0;
2344        info.audioLastTime = 0;
2345        info.videoLastTime = 0;
2346        info.refCount = 0;
2347
2348        if (mBatteryData.add(uid, info) == NO_MEMORY) {
2349            ALOGE("Battery track error: no memory for new app");
2350            return;
2351        }
2352    }
2353
2354    BatteryUsageInfo &info = mBatteryData.editValueFor(uid);
2355
2356    if (params & kBatteryDataCodecStarted) {
2357        if (params & kBatteryDataTrackAudio) {
2358            info.audioLastTime -= time;
2359            info.refCount ++;
2360        }
2361        if (params & kBatteryDataTrackVideo) {
2362            info.videoLastTime -= time;
2363            info.refCount ++;
2364        }
2365    } else {
2366        if (info.refCount == 0) {
2367            ALOGW("Battery track warning: refCount is already 0");
2368            return;
2369        } else if (info.refCount < 0) {
2370            ALOGE("Battery track error: refCount < 0");
2371            mBatteryData.removeItem(uid);
2372            return;
2373        }
2374
2375        if (params & kBatteryDataTrackAudio) {
2376            info.audioLastTime += time;
2377            info.refCount --;
2378        }
2379        if (params & kBatteryDataTrackVideo) {
2380            info.videoLastTime += time;
2381            info.refCount --;
2382        }
2383
2384        // no stream is being played by this UID
2385        if (info.refCount == 0) {
2386            info.audioTotalTime += info.audioLastTime;
2387            info.audioLastTime = 0;
2388            info.videoTotalTime += info.videoLastTime;
2389            info.videoLastTime = 0;
2390        }
2391    }
2392}
2393
2394status_t MediaPlayerService::pullBatteryData(Parcel* reply) {
2395    Mutex::Autolock lock(mLock);
2396
2397    // audio output devices usage
2398    int32_t time = systemTime() / 1000000L; //in ms
2399    int32_t totalTime;
2400
2401    for (int i = 0; i < NUM_AUDIO_DEVICES; i++) {
2402        totalTime = mBatteryAudio.totalTime[i];
2403
2404        if (mBatteryAudio.deviceOn[i]
2405            && (mBatteryAudio.lastTime[i] != 0)) {
2406                int32_t tmpTime = mBatteryAudio.lastTime[i] + time;
2407                totalTime += tmpTime;
2408        }
2409
2410        reply->writeInt32(totalTime);
2411        // reset the total time
2412        mBatteryAudio.totalTime[i] = 0;
2413   }
2414
2415    // codec usage
2416    BatteryUsageInfo info;
2417    int size = mBatteryData.size();
2418
2419    reply->writeInt32(size);
2420    int i = 0;
2421
2422    while (i < size) {
2423        info = mBatteryData.valueAt(i);
2424
2425        reply->writeInt32(mBatteryData.keyAt(i)); //UID
2426        reply->writeInt32(info.audioTotalTime);
2427        reply->writeInt32(info.videoTotalTime);
2428
2429        info.audioTotalTime = 0;
2430        info.videoTotalTime = 0;
2431
2432        // remove the UID entry where no stream is being played
2433        if (info.refCount <= 0) {
2434            mBatteryData.removeItemsAt(i);
2435            size --;
2436            i --;
2437        }
2438        i++;
2439    }
2440    return NO_ERROR;
2441}
2442} // namespace android
2443